United States President Donald Trump, who arrived at the WEF meeting on Thursday, has famously boasted that his "nuclear button" is much bigger and more powerful than that of the North Korean leader, Kim Jong-un. The two men have been swapping threats over the use of nuclear weapons for the past year, putting other countries' governments on high alert.

This situation, combined with leaked documents from the Trump administration seen by the anti-nuclear weapons group, lead Fihn to believe that world powers must take urgent action to address the nuclear threat.